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Wells Criteria for DVT
Pre-test clinical probability scoring for deep vein thrombosis
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Wells DVT Score
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Wells DVT Score
DVT Probability:
Recommended Workup:
Wells DVT Risk Stratification
| Score | Probability | DVT Prevalence | Recommended Action |
|---|---|---|---|
| ≤0 | Low | ~3% | D-dimer; if negative, DVT excluded. If positive → compression US. |
| 1–2 | Moderate | ~17% | Compression US; if negative + low suspicion → D-dimer |
| ≥3 | High | ~75% | Compression US; if negative → venography or repeat US in 1 week |
Score = sum of positive criteria + (−2 if alternative diagnosis equally likely)
Range: typically −2 to +8
Range: typically −2 to +8
Clinical Note: The Wells DVT criteria were validated in outpatient populations with suspected DVT. In high-probability patients, proceed to imaging regardless of D-dimer. Anticoagulation may be started empirically in high-probability patients while awaiting imaging confirmation.
For clinical decision support only. Not a substitute for professional medical judgment.
